LAUSR

Owing to their low-cost and abundant reserves relative to conventional lithium-ion batteries (LIBs), potassium-ion batteries (PIBs) and aluminum-ion batteries (AIBs) have shown appealing potential for electrochemical energy storage, but progress so far has been limited by the lack of suitable electrode materials. In this work, we demonstrated a facile strategy to achieve highly reversible potassium and aluminum ions storage in strongly coupled nanosized MoSe2@carbon matrix, induced through an ion complexation strategy. We present a broad range of electrochemical characterization of the synthesized product which exhibits high specific capacities, good rate capability and excellent cycling stability towards PIBs and AIBs. Through a series of systematic ex-situ X-ray photoelectron spectroscopy (XPS) characterizations and density functional theory (DFT) calculations, the Al3+ intercalation mechanism of MoSe2 based AIBs are elucidated. Moreover, both the assembled PIBs and AIBs worked well when exposed to low and high temperatures within the range of -10 to 50 ℃, promising for the energy storage devices in the harsh environment. The present study provides new insights on exploration of MoSe2 as high-performance electrode materials for PIBs and AIBs.